The gcd of two numbers is 7 and their lcm is 140. If one of the numbers is 20 find the other number

49

Step-by-step explanation:

Product of GCD and LCM = Product of the 2 numbers

Product of GCD and LCM = 7 × 140 = 980

One number is 20 so let the other number be N

20×N=7×140

20N=980

2N=98

N=49

so the other number is 49

49

Step-by-step explanation:

hello :

let : gcd =D    and  lcm = M    two numbers are : a , b

D×M =a × b

in this exercice : D=7    M=140    b=20   calculate the other number : a

7×140 = a × 20

so : a= 7×140/20 =49

16

step-by-step explanation:

2 x 40 = 80

80/5

= 16

f(2x−x2)=−3x2+6x−1

step-by-step explanation:

set up the composite function and evaluate.

f(2x−x2)=−3x2+6x−1